“Do not ignore a call from me when you know I am feeling neurotic about a boy. That is Best Friend 101.” —Nash
Maggie and Nash are outsiders. She’s overweight. He’s out of the
closet. The best of friends, they have seen each other through thick and
thin, but when Tom moves to town at the start of the school year, they
have something unexpected in common: feelings for the same guy. This
warm, witty novel—with a clear, true voice and a clever soundtrack of
musical references—sings a song of love and forgiveness.(summary from Goodreads)

Due out next month, I've only just heard about this book and it definitely seems right up my alley.